Casper is about 3 or 4 yrs old. She is actually my daughter and son-in-laws dog, but she spends about half the time with us. She is a mix of probably AB/PBT/Fiest. Yes, Fiest. The people my daughter got her from said she was AB, but said there was a pretty good chance she may have been sired by their other dog, a ???/Fiest cross. She definitely has some Fiest characteristics...hyper, short attention span, hyper, oh, and did I say, hyper? She's really a sweet dog, though.